Process of manufacturing bronze-powder.



' No. 726,932. PATBNTED MAY 5, 1903. \K.HUTH. PROCESS OF MANUFACTURINGBRONZE POWDER.

APPLICIATION FILED MAY 15, 1902.

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WITNESSES."

Aha/mars NITED STATES Tatented May 5, 1903.

PATENT OFFICE.

KARL HUTH, OF BARNSDORF, GERMANY, ASSIGNOR TO BRONZEFARBEN WERKEAKTIENGESELLSOHAFT VORMALS CARL SCHLENK, OF ROTH, NEAR NUREMBERG,BAVARIA, GERMANY.

PROCESS OF MANUFACTURING BRONZE-POWDER.

SPECIFICATION forming part of Letters Patent No. 726,932, dated May 5,1903.

' Application filed May 15, 1902. Serial No. 107.515. (No specimens-lturing Bronze-Powder, of which the following is a full, clear, and exactspecification.

In the manufacture ofbronze-powdervarious attempts have been madetoovercome the long, expensive, and by no means easy V to process ofpreparing metals, especially of alloying metals with ingot metals, toobtain the product for the stamping operation. Metallic grains forming amore or less fine powder, as also the waste materials from other I5industries, do not admit of satisfactory stamping to a bronze-powder atonce bright, pliable, and soft, nor do they yield sufficient material,especially in the case of alloys containing a higher percentage of zinc.This end is attained in the present invention by- ,preparing a productsufficiently thin and soft to make the stamping uniform throughout theoperation. By properly pouring out the metals or metallic alloys thinand very soft and pliable products are produced having the form ofbands, lamellze, or films.

In carrying out my new method I can proceed in various manners. In thefirst place it is possible to obtain products having the 0 form ofbands, leaves, or films by pouring the liquid metal or alloy in a longstream onto a rotating hollow cylinder, preferably on the inner side.The material will form bands, the thickness of which can be regulated bythe speed of the cylinder, and after cooling will peel oif of itself.After being cleansed in the usual manner this product is fed di rectlyto the stamps and then converted gradually into the finest powderpossessing superior brightness, pliability, and purity.

In the accompanying drawings, Figure 1 is a side elevation, partly insection; and Fig. 2 is a section on line 2 2 of Fig. 1 looking in thedirection of the arrows.

The drawings show one-way of carrying 5' out my method, in whichacylinder a is arranged to rotate horizontally,being connected'with ashaft, b, having thereon fast and loose pulleys c.

01 represents a ladle or cup on the end of a handle efor introducing theliquid metal into the interior of the revolving cylinder a.

The same result is obtainedby pouring out the liquid metal betweenrollers, which carry it forward and so convert it to fiat thin products.It always follows that the product, besides thinness, also obtains therequisite degree of softness, so that here the manner and rapidity ofthe cooling play a prominent part. Sudden chilling should be avoided. 6oI claim A '1. The process for the manufacture of bronzepowder consistingin bringing the liquid metal into contact with rotary means to formbands therefrom and then stamping the bands to a fine powder.

2. The process for. the manufacture of bronze-powder which consists inpouring out the liquid metal and by converting it to a productsufficiently thin and soft and having the. form of bands, and inproperly cleansing such products and stamping them uniformly andconverting them gradually to a fine bronze-powder of the brightness andpliabil= ity desired.

3. The.process which consists in pouring out the metals onto the surfaceof a rotating hollow cylinder, so that the metals are carried forward bythe cylinder until the cooled bands peel 0E, and then stamping the bandsto a fine powder.

In witness whereof I have hereunto set-my hand in presence of twowitnesses.

*KA'RL :rIUT I-I.

Witnesses:

LEONHARD OTT, OSCAR BooK.

